深圳汇道Android分页工具类的实现.doc

深圳汇道Android分页工具类的实现我们在项目开发中，经常需要频繁的使用Android分页，所以有必要实现一个封装的类来统一管理实现。首先看下效果图：从上图我们可以看出，这里是将listview中的数据通过底下的分页工具实现分页显示。那我们接下来先贴出代码： 第一步：实现布局，这里有两个布局文件，第一个主布局文件main.xml 第二个布局文件pagebutton.xml.这个文件嵌套在第一个主文件中。 Button android:id=+id/first_page android:layout_width=wrap_contentandroid:layout_height=wrap_contentandroid:text=| Button android:id=+id/page_up android:layout_width=wrap_contentandroid:layout_height=wrap_contentandroid:text= android:textSize=18sp/ |android:textSize=18sp/ 新建一个activity,用来显示界面publicclassBuilderList1extendsQueryContextActivityprivatePagedQueryResultHelperpagedQueryResultHelper;privateMapparams;privateListViewlist; privateListcolumnWidths; Override protectedvoidonCreate(BundlesavedInstanceState)/TODOAuto-generatedmethodstubsuper.onCreate(savedInstanceState);setContentView(R.layout.mynotifylist);setOnClickListener(); columnWidths=newArrayList(); intweight = this.getWindowManager().getDefaultDisplay().getWidth(); columnWidths.add(weight); pagedQueryResultHelper=newPagedQueryResultHelper(this);pagedQueryResultHelper.setTitleCellWidth(columnWidths); /这个方法是用来查询数据并显示在LISTVIEW中的，我们这次的重点不在这里，我只列出不详讲，有兴趣的朋友可以自己研究下listview/query(); protectedvoidquery() params=newHashMap(); params.put(userName,UserInfo.getUserName(); pagedQueryResultHelper.setQueryParams(getBuilderList,params,startNum,endNum,MyNotifyList,R.array.build_list_name, R.array.build_list); if(pagedQueryResultHelper.initialQuery()=null)newAlertDialog.Builder(this) .setTitle(R.string.message_title) .setMessage(没有查询到相关信息，请返回！).setPositiveButton(R.string.OK_text,null).setPositiveButton(R.string.OK_text, newDialogInterface.OnClickListener()OverridepublicvoidonClick(DialogInterfacedialog,intwhich)BuilderList1.this.finish(); ).show(); list=(ListView)findViewById(R.id.list); list.setOnItemClickListener(newOnItemClickListener() Override publicvoidonItemClick(AdapterViewadapterView,Viewview,intindex,longarg3) ListMapdata=pagedQueryResultHelper.getWholeResult();Intentintent = new Intent(BuilderList1.this, FloorInfo.class); intent.putExtra(value,(Serializable)data.get(index);intent.putExtra(buildid,data.get(index).get(BUILDID) .toString();startActivity(intent);); Override publicvoidonClick(Viewarg0)switch(arg0.getId()caseR.id.first_page: pagedQueryResultHelper.firstPage();break; caseR.id.page_down: pagedQueryResultHelper.pageDown();break; caseR.id.page_up: pagedQueryResultHelper.pageUp();break; caseR.id.last_page: pagedQueryResultHelper.lastPage();break; caseR.id.to_page: pagedQueryResultHelper.toPage();break;Override protectedvoidclear() Override protectedvoidsetOnClickListener()实现这个工具类，这个类代码有些多packageorg.Base.Utils; importjava.util.Arrays;importjava.util.List;importjava.util.Map; importorg.Base.Activities.QueryContextActivity;importorg.Base.Container.DataTableAdapter;importorg.Base.Container.myListViewTitle;importorg.Base.Webservice.WSObjectListUtil;importorg.Base.Webservice.WSObjectMapUtil;importorg.Base.Webservice.WSObjectUtil;importorg.Base.Webservice.WSUtil; importorg.Base.Webservice.WebServiceConfig;importorg.DigitalCM.R; importorg.ksoap2.serialization.SoapObject; importandroid.app.AlertDialog;importandroid.util.Log;importandroid.widget.Button;importandroid.widget.EditText;importandroid.widget.ListView;importandroid.widget.TextView; publicclassPagedQueryResultHelper privatefinalstaticintinitialFromRecordNum=1;/每页从第1条开始privatefinalstaticintinitialToRecordNum=20;/每页可以显示20条 publicPagedQueryResultHelper(QueryContextActivitycontextActivity)/构造函数用来初始化，主要是用来接收传过来的activity做为上下文对象this.contextActivity=contextActivity; findViews();/调用此方法找到传过来的activity的控件对象setOnClickListener();/给控件设置监听 if(currentPageText!=null)/如果所有页面只有一页，那就只显示一页 setCurrentPage(1); publicListListinitialQuery() setRecordNumEachPage(initialToRecordNum-initialFromRecordNum+1);/设置每页的记录条数 returnquery(initialFromRecordNum,initialToRecordNum); publicListListinitialQuery01()returnquery(methodName,params); privatevoidsetCurrentPage(intcurrentPage)/设置当前页this.currentPage=currentPage;currentPageText.setText(String.valueOf(currentPage); publicvoidsetMarkable(booleanbMarkable)/这个是用来标记记录的this.bMarkable=bMarkable; publicvoidsetRecordNumEachPage(intrecordNumEachPage);/设置每页的记录条数 this.recordNumEachPage=recordNumEachPage; recordNumEachPageText.setText(String.valueOf(recordNumEachPage); publicvoidsetTotalRecord(inttotalRecord)/设置总记录数this.totalRecord=totalRecord; totalRecordNumText.setText(String.valueOf(totalRecord);getTotalPageNumText(); privateQueryContextActivitycontextActivity;privateTextViewtotalPageNumText;privateTextViewtotalRecordNumText;privateTextViewrecordNumEachPageText;privateButtonfirstPage;privateButtonpageDown;privateButtonpageUp;privateButtonlastPage; privateEditTextcurrentPageText;privateButtontoPage; privateinttotalPage; privateinttotalRecord; privateintrecordNumEachPage;privateintcurrentPage;privateStringfromRecordNumField;privateStringtoRecordNumField;privateStringmethodName; privateMapparams;privateStringcontentTableName; /privateStringcountTableName;privateintheaderNameId; privateintheaderId; privateListcolumnWidths=null;privatebooleanbSetTitleValue=false;privateListMapwholeresult=null;privateListListrows=null; privatebooleanbMarkable=false; privateDataTableAdapterdataTableAdapter; publicvoidsetQueryParams(StringmethodName,Mapparams, StringfromRecordNumField,StringtoRecordNumField, StringcontentTableName,intheaderNameId,intheaderId)this.methodName=methodName;this.params=params;this.fromRecordNumField=fromRecordNumField;this.toRecordNumField=toRecordNumField;this.contentTableName=contentTableName;/this.countTableName=countTableName; this.headerNameId=headerNameId;this.headerId=headerId; publicvoidsetQueryParams(StringmethodName,Mapparams, StringfromRecordNumField,StringtoRecordNumField,StringcontentTableName)this.methodName=methodName; this.params=params; this.fromRecordNumField=fromRecordNumField;this.toRecordNumField=toRecordNumField;this.contentTableName=contentTableName;/this.countTableName=countTableName; publicvoidsetQueryParams(StringmethodName,Mapparams,StringcontentTableName,intheaderNameId,intheaderId)this.methodName=methodName;this.params=params; this.contentTableName=contentTableName; this.headerNameId=headerNameId;this.headerId=headerId; publicvoidsetTitleCellWidth(ListcolumnWidths)this.columnWidths=columnWidths; /* *publicintgetCurrentPage()returncurrentPage;*/ privatevoidfindViews() totalPageNumText=(TextView)contextActivity.findViewById(R.id.total_page_num); totalRecordNumText=(TextView)contextActivity.findViewById(R.id.total_record_num); recordNumEachPageText=(TextView)contextActivity .findViewById(R.id.record_num_each_page);firstPage=(Button)contextActivity.findViewById(R.id.first_page);pageDown= (Button) contextActivity.findViewById(R.id.page_down); pageUp=(Button)contextActivity.findViewById(R.id.page_up);lastPage=(Button)contextActivity.findViewById(R.id.last_page); currentPageText=(EditText)contextActivity .findViewById(R.id.current_page); toPage=(Button)contextActivity.findViewById(R.id.to_page); privatevoidsetOnClickListener() if(firstPage!=null) firstPage.setOnClickListener(contextActivity); if(pageDown!=null) pageDown.setOnClickListener(contextActivity);if(pageUp!=null) pageUp.setOnClickListener(contextActivity); if(lastPage!=null) lastPage.setOnClickListener(contextActivity); if(toPage!=null) toPage.setOnClickListener(contextActivity); privatevoidgetRecordNumEachPageText()try recordNumEachPage=Integer.parseInt(recordNumEachPageText.getText().toString(); catch(NumberFormatExceptione